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Finding the Fourth Proportional to 2,924.80, 4,387.04 and 976.80

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Solution

The fourth proportional to 2,924.80, 4,387.04 and 976.80 is: 1,465.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,924.80 : 4,387.04 = 976.80 : x
  2. Step 2: Convert to fraction form
    2,924.80/4,387.04 = 976.80/x
  3. Step 3: Cross multiply
    2,924.80x = 4,387.04 × 976.80
  4. Step 4: Simplify right side
    2,924.80x = 4,285,260.67
  5. Step 5: Solve for x
    x = 4,285,260.67/2,924.80
  6. Step 6: Final answer
    x = 1,465.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.